Try riding your bike everywhere for a month in the largest ring. Up hills, down hills, flats.
If you can do it all in the larger ring then you have answered your own question. If you struggle on some sections on your larger ring then consider that you may need a chainring the next size down.
I did exactly this when I did a 1x conversion on my fat bike. Large ring was 36t and the cassette is a 11-36. I rode the large ring everywhere for a month and occasionally had to shift to the smaller ring so I settled on a 34t for my 1x setup. I can ride it everywhere.
1x = less weight and less maintenance.